While the likes of Nicole Kidman and Carey Mulligan have been showing off their ultra sleek Riviera style, Cotillard did what she does best at the Cannes event. She showed up in a dress that only she can pull off and shock horror, this strapless number was NOT from Dior (her go-to designer brand... sigh).

Instead, Marion made a statement in a blush gown by Vivienne Westwood. Yes, it's a bit on the short and low-cut side for a daytime do, but on this girl, anything goes.